The HC-521 is a versatile and reliable fitness equipment designed to offer an effective workout experience. Here are the key features and specifications:

- Expand Size: The HC-521 has an expandable size of 110*48*108cm, providing ample space for users to perform various exercises comfortably.

- Steel Tube Thickness: The equipment is constructed using durable steel tubes with a thickness of 1.2mm, ensuring stability and durability during workouts.

- Fly Wheel: It is equipped with a 6kg flywheel, which contributes to the smooth and consistent motion during cardio exercises.

- Max User Weight: With a maximum user weight capacity of 150kg, the HC-521 can accommodate a wide range of users, making it suitable for different fitness levels.

- Packing Size: When disassembled for transportation or storage, the HC-521 has a packing size of 96*78*21cm, making it easy to handle and store in limited spaces.

- N.W/G.W: The net weight of the equipment is 22kg, while the gross weight, including packaging materials, is 25kg.

Overall, the HC-521 is a space-saving and sturdy fitness option, perfect for home use or in small gym setups. Its durable build, smooth operation, and generous weight capacity make it an excellent choice for individuals seeking to enhance their cardiovascular fitness and overall well-being.